Long Rest This card harkens back to Seasons Past, a base-BG control deck that used its namesake card to generate enormous card advantage and never die
Jin-Gix's spell here lets you seize control of another creature, and make a copy of it if you pay an extra price
"In Winterspell, we tell the story of a vine thats growing out of control and sucking up flood ink," Jenna Giuffrida, co-lead on narrative design for Winterspell, shared with us
Sure, its controller gains life equal to its power, but that's a very small price to pay to ensure you don't lose the game - and one-mana instant speed removal for any target will stop you from losing the game
Your deck should already be set up to take advantage of Squall Line with ways to get lots of land into play or mana doublers like Nissa, Who Shakes the World, Regal Behemoth, and Zendikar Resurgent